Churn-motor.



, J. 1". MURDOGK.

GHUBN MOTOR. APPLICATION FILED MAB..14, 1910.

1,010,299. P tented Nov. 28, 1911.

V wzmhrz Witnesses I I Inventor,

' Attorneys JOHN F. MURDOCK, 0F GRAIPELAND, TEXAS.

CHURN-MOTOR.

Specification of Letters Patent.

Patented Nov. 28, 1911.

Application filed'March 14, 1910. Serial No. 549,071.

To all whom it may concern:

Be it known that 1, JOHN F. MURDOCK, a citizen of the United States,residing at Grapeland, in the county of Houston and State of Texas, haveinvented a new and useful Churn-Motor, of which the following is aspecification.

This invention relates to a churn motor and it consists in the novelconstruction and arrangement of its parts as hereinafte shown anddescribed.

The object of the invention is to provide a simple and effective springmotor especially adapted to be used for operating churns and whichincludesmeans especially adapted to be manipulated to interrupt or stopthe operation of the motor.

A further object of the invention is to so assemble the parts that it isnot necessary to employ a pendulum to govern the operation of the motorproper, but in lieu-thereof a weighted arm is employed Which not onlygoverns the motor proper but adds suflicient momentum to the activeparts of the churn to facilitate the churning operation.

. In the accompanying drawings,-Figure l is a vertical sectional view ofthe churn motor connected with a churn. Fig. 2 is an edge elevation ofthe churn motor. Fig. 3 is a detail side view of a portion of the springmotor. Fig. 4 is a detail plan view of a dasher forming a portion of thechurn mechanism.

The churn motor comprises a frame 1 in which is journaled an arbor 2. Abarrel 3 is journaled for rotation upon the said arbor and is providedupon one side with a series of teeth 4. A pawl 5 is mounted upon theframe 1 and at its free end is adapted to engage the teeth 4 upon thebarrel 3. A spring 6 is located within the barrel 3 and is connectedwith the same and the arbor 2 in the usual manner. A gear wheel 7 isjournaled for rotation upon the arbor 2 and is attached to one side ofthe barrel 3 as is usual in such construction. A shaft 8 is alsojournaled in the frame 1 and is provided with a gear wheel 9 whichmeshes with the gear wheel 7. A star wheel 10 is fixed to the shaft 8. Abar 11 is pivoted in the frame 1 below the shaft 8 and an escapementyoke 12 is fixed to the said bar. The ends of the yoke 12 are adapted toengage or enter the spaces between the peripheral points of the starwheel 10 in the usual manner. At one side the yoke 12 is continued intoan arm 13 which carries at its outer free end a fixed weight-14. Adasher rod 15 is pivotally connected with the Weight 14 and passesthrough a top 16 of a churn barrel 17. A dasher 18 is screw-threadedupon the lower end of thedasher rods 15 and is normally located withinthe barrel 17.

A radially disposed arm 19 is fixed to the pivoted bar 11. A bar 20 isfixed at its ends to the opposite sides of the frame 1 and a spring rod21 is coiled as at 22 around a portion of the bar 20. From the coil 22the rod 21 is outwardly disposed as at 23 and one end of the said rod 21is carried back and fixed'to one side of the frame 1 at a point to oneside of the bar 20 as at 24. The other end of the rod 21 is extendedlaterally in the form of a stop or catch 25 which at .times is adaptedto engage the arm 19 and hold the same so that the bar 11 cannot swingupon its pivot. Any suitable means as for instance a crank handle 26 maybe provided for rotating the arbor 2 to wind the spring 6 within thebarrel 3.

In operation when the spring 6 is wound up and the catch extremity 25 ofthe rod 21 is disengaged from the arm 19 and the churn is connected withthe weight 14 as described. rotary movement is transmitted from thewheel 7 through the wheel 9 to the shaft 8. As the said shaft 8 rotatesthe star wheel 10 is carried around and the points thereof engaging theextremities of the escapement yoke 12 will cause the said yoke to rockthepivoted bar 11. As the said yoke rocks with thebar the extremity 13will reciprocate the weight 14 vertically and through the said weightthe dasher rod 15 and dasher 18 will be reciprocated vertically. Byreason of the fact that the weight 14 is provided at the,outer freeextremity of the extension 13 of the yoke 12 it is not necessary toprovide a pendulum or other means for regulating the action of thespring 6 upon the connected train of gear wheels and furthermore byreason of the location of the said weight 14 at its outer free extremityof the extension 13, sufficient momentum is added to the mechanism tofacilitate the churning operation. The rod 21 is under tensionsufficiently to hold the catch extremity 25 thereof away from the arm 19when the said catch is disengaged from the said arm. This is by reasonof the fact that the said rod 21 is provided with 1 into the path ofmovement of the arm 19 and will engage the upper edge thereof.

This will bring the arm 19 to a state of rest' and will hold theextremities of the escapement yoke 12 in the spaces between theperipheral points of the star wheel 10 and will stop the movement of thesaid star wheel. As the weight 14 tends to gravitate and is locatedbeyond one side of the bar 11 from that to which the arm 19 extends, thesaid weight will hold the said arm 19 in frictional engagement with thecatch extension 25 of the rod 21 and thus the said extension 25 will beheld in engagement with the arm 19 against the natural tendency of therod 21, by reason of its mounting and its tension, to move the catchextremity 25 away from the said arm 19.

To disengage the extremity 25 of the rod 21 from the arm 19 it isnecessary only to lift the outer portion of the extension 13 of the yoke12 when the said rod 21 will move back or may be moved back out ofengagement with the said arm 19.

Having described the invention what 1 claim as new and desire to secureby Letters Patent 1s A motor comprising a frame, a spring actuatedmotion transmitting means located thereon and terminating in a starwheel, a bar pivotally mounted upon the frame, an escapement yoke fixedto the bar and arranged to engage the peripheral points of the starwheel, said yoke having at one side an extension, a weight fixed to thefree end of the extension, an arm fixed to the bar and extending beyondthat side thereof which is opposite the side beyond which the yokeextension projects, a cross bar attached to the frame, a resilient rodhaving a coiled section which surrounds the cross bar, said rod fromsaid coiled section being outwardly disposed and having one end attachedto the frame at a point at one side of said cross bar, said rod havingat its other end a laterally disposed catch adapted to be projected intothe path of movement of the arm upon the pivoted bar and when inengagement with said arm adapted to hold the same at a state of rest.

In testimony that I claim the foregoing as my own, I have hereto affixedmy signature in the presence of two witnesses.

JOHN F. MURDOCK. Witnesses:

OLON W. DAVIS, J OHN 'N. PARKER.

Copies of'this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

